Heating pad



E. c. CHANCEY 2,126,734

HEATING PAD Aug. 16, 1938.

Filed Aug. 31, 1936 //v yew roe:

HM Arr-newer:

\ 44 3.A I Patented Aug. 16, 1938 UNITED STATES PATENT OFFICE HEATING PAD Ernest C. Chancey, Detroit, Mich.

Application August 31, 1936, Serial No. 98,717 3 Claims. (01. 13236.2)

My invention relates to the type of pads that chlorate of potassium and the metallic alumiare used for applying heat to tresses of hair. The num. nd r r a y conditions, s reaction principal objects of the invention are to provide w uld p d s w y u in y composition, s for the application of the heat at a temperature reaction iS Stimulated and quiekened y the p suitable for the hair and to maintain such temence of pp r su p t w h acts as a a y t 5 perature fairly uniform throughout the period but e f un er es 110 Chemical reaction. of treatment. The invention consists principally The Oxidation of the metallic aluminum generin a composition of matter hereinafter described ates considerable at inside of t p m and claimed. It also consists in the combina- Of s at conve ts some of the water into tion of such composition ith th package heresteam which acts to steam the tress of hair. Some 10 in ft d ib d d l i d, of the heat is initially absorbed by the kaolin In the accompanying drawing wherein like and Pumice and later transmitted y them reference numerals refer to like parts wherever through the p p e Of e p a e to t e t r, hair. The kaolin and the pumice are chemically 5- 1 is a i of a pad onfonning t my inert; but they serve to prevent excessive rapidti ity of oxidation of the aluminum, they make it i 2 i view of a sheet of bibulous paper easy to distribute the small quantity of active used it said pad; chemicals throughout the package with a fair Fig. 3 is an enlarged fragmentary section degree of uniformity, d t ey se ve to first abthroush said pad on the line 3-3 in Fig. 1; sorb considerable of the heat of reaction and 2 Fj g 4 is a View showing t bibulous paper later yield it to the hair over a limited period plied t t pad; and of time and at a substantially uniform tempera- Fig 5 is an enlarged fragmentary section on ture for the length of time required. It is noted the line 5-5 in Fig. 3. that the aluminum foil, which constitutes the My container comprises a rectangular sheet I Outer Side Cove! 0f the P acts as an 5 of aluminum foil and a Sheet 2 of unsized paper insulator and causes the greater portion of the that is readily permeable by water. A suitable h reaction to be transmitted ou the quantity of the composition 3 hereinafter de- Inner slde 9 the P scribed is placed between said sheets and the practlce, I h e f und that the package 0 margins thereof are folded together to close the hereinbefore descnbed, Containing grams of container. A sheet 4 of bibulous paper is assoclthe com-position Conforming to the above ated with each container tioned formula, when wet with bibulous paper The following f rmul represents a eomposi and bent around the hair in the usual manner,

tion that is suitable for my invention, namely: will produce a temperature of about two dred eight degrees Fahrenheit, in the hollow Grams of the pad, within one minute and will main- Chlorate of potassium tain the heat there for about eight to ten minluminum dust utes with only two or three degrees variation Anhydrous sulphate of copper thereof during that time. Kaolin It is noted that, for several reasons, there is no 40 Pumice danger of burning the hair. First, while the temperature inside of the pad is high enough to con- Total 5 vert water into steam, such conversion of water All of the ingredients are pulverized or finely di- Into stfiam absorbs conslderable heat? and t vided and thoroughly mixed together. The total Steam ltself tends to protect the ham Agaln, 45 quantity represented by this formula is m t water is required for the chemical reaction which for a container of about two inches wide by three generates the heat and When all the Water 18 inches long. evaporated, chemical reaction ceases. Accord- In practical use, the sheet of bibulous paper y, the Water-holding Capacity of t e bibulous is dipped into water or otherwise wet with water paper is a factor in the ultimate results. In 50 and applied to the paper side of the package, practice, with the package above described, I which is then folded and clamped around the have found it desirable to use bibulous paper tress of hair. The water percolates through the with a water-holding capacity of about three paper side of the package, wets the composition cubic centimeters. therein and brings about a reaction between the The particular composition hereinbefore de- 55 sn-u- 7 M scribed is most suitable for use with medium fine hair. For treating finer hair, the temperature should be maintained for a longer period. For treating fine hair, I prefer the following composition:

Grams Chlorate of potassium 1.30 Aluminum dust, 1.70 C'upper sulphate .15 Kaolin 1.50 Pumice 3.50

Total 8.15

This composition, in the quantity designated, and used with the needed water, will generate steam and will maintain an effective temperature on the tress therein somewhat above two hundred degrees Fahrenheit for a period of about twelve minutes.

For treating coarse hair, I prefer the following formula:

Grams Chlorate of potassium .50 Aluminum .dust .80 Copper sulphate .15 Pumice 3.00 Kaolin 3.00

Total 7.85

Coarse hair does not require as long steaming as finer hair and the formula last given will produce a temperature of about two hunderd eight degrees Fahrenheit at the air in one minute after the wetting of the pad, which temperature drops in the course of five minutes to about two hundred degrees Fahrenheit.

For treating medium coarse hair, I prefer the following formula:

Grams Chlorate of potassium .60 Aluminum dust .80 Copper sulphate .15 Pumice 2.70 Kaolin 2.70

Total 6.95

What I claim is:

1. A self-heating pad of the kind described comprising a single ply of aluminum foil and a single ply of absorbent paper with their margins folded to form a container, and a composition in said container substantially of the following formula:

Grams Chlorate of potassium .90 Aluminum dust 1.30 Anhydrous sulphate of copper .15 Kaolin 2.00 Pumice 2.00

Total"; 6.35

2. A self-heating pad of the kind described comprising a single ply of aluminum foil and a single ply of absorbent paper with their margins folded to form a container, and a composition in said container substantially of the following formula:

Grams Chlorate of potassium 1.30 Aluminum dust 1.70 C'upper sulphate .15 Kaolin 1.50 Pumice 3.50

Total 8.15

3. A self-heating pad of the kind described comprising a single ply of aluminum foil and a single ply'of absorbent paper with their margins folded to form a container, and a composition in ERNEST C. CHANCEY. 

